CSS provides a comprehensive set of properties to control the appearance of text on a webpage. The font-family property, for instance, allows developers to specify the font of text content. It can either be a generic font family like ‘serif’ or ‘sans-serif’ or a specific font name.

body {
font-family: 'Arial', sans-serif;
}

Font Stacks:

When defining a font, it’s essential to consider cross-browser compatibility and fallback options. Utilizing font stacks ensures that if a preferred font isn’t available, the browser can use a suitable alternative. For example:

body {
font-family: 'Open Sans', Arial, sans-serif;
}

This instructs the browser to use ‘Open Sans’ if available, falling back to Arial if it’s not, and ultimately defaulting to a generic sans-serif font.

Font Size and Weight:

Controlling the size and weight of text is crucial for optimizing readability and visual hierarchy. CSS offers properties like font-size and font-weight to adjust these aspects.

h1 {
font-size: 2em;
font-weight: bold;
}

Responsive Typography:

In today’s era of diverse devices and screen sizes, responsive design is imperative. CSS provides units like ‘vw’ (viewport width) and ‘rem’ (root em) that enable the creation of scalable and adaptable typography.

body {
font-size: 16px;
}

@media screen and (min-width: 768px) {
body {
font-size: 1.2rem;
}
}

This example demonstrates how the font size increases on screens with a minimum width of 768 pixels.